Subtitles section Play video Print subtitles I guess the story actually has to start maybe back in the the 1960s, when I was seven or eight years old, watching Jacques Cousteau documentaries on the living room floor with my mask and flippers on. Then after every episode, I had to go up to the bathtub and swim around the bathtub and look at the drain, because that's all there was to look at. And by the time I turned 16, I pursued a career in marine science, in exploration and diving, and lived in underwater habitats, like this one off the Florida Keys, for 30 days total. Brian Skerry took this shot. Thanks, Brian. And I've dived in deep-sea submersibles around the world. And this one is the deepest diving submarine in the world, operated by the Japanese government. And Sylvia Earle and I were on an expedition in this submarine 20 years ago in Japan. And on my dive, I went down 18,000 feet, to an area that I thought would be pristine wilderness area on the sea floor. But when I got there, I found lots of plastic garbage and other debris. And it was really a turning point in my life, where I started to realize that I couldn't just go have fun doing science and exploration. I needed to put it into a context. I needed to head towards conservation goals. So I began to work with National Geographic Society and others and led expeditions to Antarctica. I led three diving expeditions to Antarctica. Ten years ago was a seminal trip, where we explored that big iceberg, B-15, the largest iceberg in history, that broke off the Ross Ice Shelf. And we developed techniques to dive inside and under the iceberg, such as heating pads on our kidneys with a battery that we dragged around, so that, as the blood flowed through our kidneys, it would get a little boost of warmth before going back into our bodies. But after three trips to Antarctica, I decided that it might be nicer to work in warmer water. And that same year, 10 years ago, I headed north to the Phoenix Islands. And I'm going to tell you that story here in a moment. But before I do, I just want you to ponder this graph for a moment. You may have seen this in other forms, but the top line is the amount of protected area on land, globally, and it's about 12 percent. And you can see that it kind of hockey sticks up around the 1960s and '70s, and it's on kind of a nice trajectory right now. And that's probably because that's when everybody got aware of the environment and Earth Day and all the stuff that happened in the '60s with the Hippies and everything really did, I think, have an affect on global awareness. But the ocean-protected area is basically flat line until right about now -- it appears to be ticking up. And I do believe that we are at the hockey stick point of the protected area in the ocean. I think we would have gotten there a lot earlier if we could see what happens in the ocean like we can see what happens on land. But unfortunately, the ocean is opaque, and we can't see what's going on. And therefore we're way behind on protection. But scuba diving, submersibles and all the work that we're setting about to do here will help rectify that. So where are the Phoenix Islands? They were the world's largest marine-protected area up until last week when the Chagos Archipelago was declared. It's in the mid-Pacific. It's about five days from anywhere. If you want to get to the Phoenix Islands, it's five days from Fiji, it's five days from Hawaii, it's five days from Samoa. It's out in the middle of the Pacific, right around the Equator. I had never heard of the islands 10 years ago, nor the country, Kiribati, that owns them, till two friends of mine who run a liveaboard dive boat in Fiji said, "Greg, would you lead a scientific expedition up to these islands? They've never been dived." And I said, "Yeah. But tell me where they are and the country that owns them." So that's when I first learned of the Islands and had no idea what I was getting into. But I was in for the adventure. Let me give you a little peek here of the Phoenix Islands-protected area. It's a very deep-water part of our planet. The average depths are about 12,000 ft. There's lots of seamounts in the Phoenix Islands, which are specifically part of the protected area. Seamounts are important for biodiversity. There's actually more mountains in the ocean than there are on land. It's an interesting fact. And the Phoenix Islands is very rich in those seamounts. So it's a deep -- think about it in a big three-dimensional space, very deep three-dimensional space with herds of tuna, whales, all kinds of deep sea marine life like we've seen here before. That's the vessel that we took up there for these studies, early on, and that's what the Islands look like -- you can see in the background. They're very low to the water, and they're all uninhabited, except one island has about 35 caretakers on it. And they've been uninhabited for most of time because even in the ancient days, these islands were too far away from the bright lights of Fiji and Hawaii and Tahiti for those ancient Polynesian mariners that were traversing the Pacific so widely. But we got up there, and I had the unique and wonderful scientific opportunity and personal opportunity to get to a place that had never been dived and just get to an island and go, "Okay, where are we going to dive? Let's try there," and then falling into the water. Both my personal and my professional life changed. Suddenly, I saw a world that I had never seen before in the ocean -- schools of fish that were so dense they dulled the penetration of sunlight from the surface, coral reefs that were continuous and solid and colorful, large fish everywhere, manta rays. It was an ecosystem. Parrotfish spawning -- this is about 5,000 longnose parrotfish spawning at the entrance to one of the Phoenix Islands. You can see the fish are balled up and then there's a little cloudy area there where they're exchanging the eggs and sperm for reproduction -- events that the ocean is supposed to do, but struggles to do in many places now because of human activity. The Phoenix Islands and all the equatorial parts of our planet are very important for tuna fisheries, especially this yellowfin tuna that you see here. Phoenix Islands is a major tuna location. And sharks -- we had sharks on our early dives, up to 150 sharks at once, which is an indication of a very, very healthy, very strong, system. So I thought the scenes of never-ending wilderness would go on forever, but they did finally come to an end. And we explored the surface of the Islands as well -- very important bird nesting site, some of the most important bird-nesting sites in the Pacific, in the world. And we finished our trip. And that's the area again. You can see the Islands -- there are eight islands -- that pop out of the water. The peaks that don't come out of the water are the seamounts. Remember, a seamount turns into an island when it hits the surface. And what's the context of the Phoenix Islands? Where do these exist? Well they exist in the Republic of Kiribati, and Kiribati is located in the Central Pacific in three island groups. In the west we have the Gilbert Islands. In the center we have the Phoenix Islands, which is the subject that I'm talking about. And then over to the east we have the Line Islands. It's the largest atoll nation in the world. And they have about 110,000 people spread out over 33 islands. They control 3.4 million cubic miles of ocean, and that's between one and two percent of all the ocean water on the planet. And when I was first going up there, I barely knew the name of this country 10 years ago, and people would ask me, "Why are you going to this place called Kiribati?" And it reminded me of that old joke where the bank robber comes out of the courthouse handcuffed, and the reporter yells, "Hey, Willy. Why do you rob banks?" And he says, "cause that's where all the money is." And I would tell people, "Why do I go to Kiribati? Because that's where all the ocean is." They basically are one nation that controls most of the equatorial waters of the Central Pacific Ocean. They're also a country that is in dire danger. Sea levels are rising, and Kiribati, along with 42 other nations in the world, will be under water within 50 to 100 years due to climate change and the associated sea-level rise from thermal expansion and the melting of freshwater into the ocean. The Islands rise only one to two meters above the surface. Some of the islands have already gone under water. And these nations are faced with a real problem. We as a world are faced with a problem. What do we do with displaced fellow Earthlings who no longer have a home on the planet? The president of the Maldives conducted a mock cabinet meeting underwater recently to highlight the dire straits of these countries. So it's something we need to focus on. But back to the Phoenix Islands, which is the subject of this Talk. After I got back, I said, okay, this is amazing, what we found. I'd like to go back and share it with the government of Kiribati, who are over in Tarawa, the westernmost group. So I started contacting them -- because they had actually given me a permit to do this -- and I said, "I want to come up and tell you what we found." And for some reason they didn't want me to come, or it was hard to find a time and a place, and it took a while, but finally they said, "Okay, you can come. But if you come, you have to buy lunch for everybody who comes to the seminar." So I said, "Okay, I'm happy to buy lunch. Just get whatever anybody wants." So David Obura, a coral reef biologist, and I went to Tarawa, and we presented for two hours on the amazing findings of the Phoenix Islands. And the country never knew this. They never had any data from this area. They'd never had any information from the Phoenix Islands. After the talk, the Minister of Fisheries walked up to me and he said, "Greg, do you realize that you are the first scientist who has ever come back and told us what they did?" He said, "We often issue these permits to do research in our waters, but usually we get a note two or three years later, or a reprint. But you're the first one who's ever come back and told us what you did.